Apparatus and method for selectively monitoring radar signals and providing an alert responsive thereto
First Claim
1. An apparatus for selectively monitoring radar signals impinging on a vehicle comprising:
- a speed determination circuit that determines a vehicle speed and provides a speed signal representative thereof;
a comparator that receives the speed signal from the speed determination circuit, compares the speed signal to a preselected speed and provides an on signal when the vehicle speed exceeds the preselected speed and an off signal when the vehicle speed is at or below the preselected speed;
a radar detecting circuit that detects the radar signals and provides a radar detected signal in response to detection of the radar signals when the comparator provides the on signal and does not detect the radar signals when the comparator provides the off signal; and
an alarm responsive to the radar detected signal that provides an alert in response thereto.
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Accused Products
Abstract
An apparatus (10) and method for selectively monitoring radar signals impinging on a vehicle is disclosed. The apparatus (10) comprises a speed determination circuit (20) that determines vehicle speed and provides a speed signal representative thereof to a comparator (22) that compares the speed signal to a preselected speed and provides an on signal when the vehicle speed exceeds the preselected speed and an off signal when the vehicle speed is at or below the preselected speed. When the comparator (22) provides the on signal, a radar detecting circuit (14) is powered to detect incoming radar signals and provide a radar detected signal to an alarm (18) that provides an alert in response to the radar detected signal. When the comparator (22) provides the off signal, the radar detecting circuit (14) is not powered and does not detect incoming radar signals.
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Citations
32 Claims
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1. An apparatus for selectively monitoring radar signals impinging on a vehicle comprising:
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a speed determination circuit that determines a vehicle speed and provides a speed signal representative thereof;
a comparator that receives the speed signal from the speed determination circuit, compares the speed signal to a preselected speed and provides an on signal when the vehicle speed exceeds the preselected speed and an off signal when the vehicle speed is at or below the preselected speed;
a radar detecting circuit that detects the radar signals and provides a radar detected signal in response to detection of the radar signals when the comparator provides the on signal and does not detect the radar signals when the comparator provides the off signal; and
an alarm responsive to the radar detected signal that provides an alert in response thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for selectively monitoring radar signals impinging on a vehicle comprising:
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a speed determination circuit that determines a vehicle speed and provides a speed signal representative thereof;
a radar detecting circuit that detects the radar signals and provides a radar detected signal in response to detection of the radar signals when the radar detecting circuit is powered;
a comparator that receives the speed signal from the speed determination circuit, compares the speed signal to a preselected speed and powers the radar detecting circuit if the vehicle speed exceeds the preselected speed; and
an alarm responsive to the radar detected signal that provides an alert in response thereto. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for selectively monitoring radar signals impinging on a vehicle comprising:
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a global positioning system receiver that determines a vehicle speed and provides a speed signal representative thereof;
a comparator that receives the speed signal, compares the speed signal to a preselected speed and provides an on signal when the vehicle speed exceeds the preselected speed and an off signal when the vehicle speed is at or below the preselected speed;
a radar detecting circuit including an antenna that receives the radar signals and a local oscillator that generates a local oscillator signal that is mixed with the radar signals to generate a radar detected signal, the local oscillator signal being generated only if the comparator provides the on signal; and
an alarm responsive to the radar detected signal that provides an alert in response thereto. - View Dependent Claims (16, 17, 18)
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19. A method for selectively monitoring radar signals impinging on a vehicle comprising the steps of:
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determining a vehicle speed;
determining whether the vehicle speed exceeds a preselected speed; and
detecting the radar signals only if the vehicle speed exceeds the preselected speed. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method for selectively monitoring radar signals impinging on a vehicle comprising the steps of:
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determining a vehicle speed and generating a speed signal representative thereof;
comparing the speed signal with a preselected speed;
generating an on signal if the vehicle speed exceeds the preselected speed and generating an off signal if the vehicle speed is at or below the preselected speed;
receiving the radar signals with an antenna;
generating a local oscillator signal that is mixed with the radar signals to generate a radar detected signal if the on signal is generated; and
providing an alert if the radar detected signal is generated. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification